ContactTerms
ET/EN/RU
EN
EestiEnglishРусский
nimistuEstonia's public business register
HomeViewsIndustriesBlogSourcesAbout

Public registry of Estonian companies — every fact traceable to a source and a date. Free and ad-free for everyone.

Nimistu MTÜ
Address: Parda tn 8, 10151 Tallinn, Estonia
E-mail: info@nimistu.ee

Browse

  • Home
  • Views
  • Industries
  • Activity licences
  • Recent registrations

Data

  • 79 sources
  • Database
  • Extensions
  • MCP

Organisation

  • About
  • FAQ
  • For journalists
  • Donate
  • Donation terms
  • Refunds
  • Terms
  • Privacy
  • Contact
© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
ContactTerms
ET/EN/RU
EN
EestiEnglishРусский
nimistu
Search›Companies›Sealion OÜ
16634557ActivePrivate limited companyEE102567580 · VAT-registered

Sealion OÜ

Harju maakond, Tallinn, Kesklinna linnaosa, Lai tn 13-3·EMTAK 62101 — Computer programming activities·3+ years
Andmed · ···
On this page
SanctionsOverviewOfficersShareholdersFoundersOther rolesForeign parentSubsidiariesFinancialsTax filingsPledgesPledges as creditorLicencesNoticesTech stackCourt rulingsTVK decisionsBlacklistLabour inspectorateHazardous facilityDPA decisionsTax-deductibleEU lobby registerTrademarksPatentsReal estateVehiclesGrantsProcurementsDocumentsState paymentsActivityConnected companies
Extension

Right in search

nimistu card above Google, Bing and DuckDuckGo results.

Chrome→Firefox→Edge→
Free · ~14 KB
See the extension →

Overview

e-Business Register · 17 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
19.12.2022e-Business Register
Address
Lai tn 13-3, Kesklinna linnaosa, Tallinn, 10133 Harju maakondADS · e-Business Register
E-mail address
sealow@sealion.come-Business Register
Principal activity
EMTAK 62101 - Computer programming activitiese-Business Register · ETCB
VAT number
ETCB · VAT-registered
Share capital
2500,00 €e-Business Register
Estonia's public business register
HomeViewsIndustriesBlogSourcesAbout

Public registry of Estonian companies — every fact traceable to a source and a date. Free and ad-free for everyone.

Nimistu MTÜ
Address: Parda tn 8, 10151 Tallinn, Estonia
E-mail: info@nimistu.ee

Browse

  • Home
  • Views
  • Industries
  • Activity licences
  • Recent registrations

Data

  • 79 sources
  • Database
  • Extensions
  • MCP

Organisation

  • About
  • FAQ
  • For journalists
  • Donate
  • Donation terms
  • Refunds
  • Terms
  • Privacy
  • Contact
© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Data · 6 sourcese-Business Register · 2 min agoMTA
e-Business Register ↗

Registered 19. detsember 2022, primary activity: Computer programming activities. Main place of business in Kesklinna linnaosa, Tallinn, Harju maakond.

Revenue 2026 II kv
51 543 €
▼ 39% vs 2025 II kv
As of 10.07.2026 (MTA)
Employees
3
2026 (MTA)
Taxes paid
86 093 €
State + labour taxes · 2026 II kv
Tax debt
0 €
As of 10.08.2026 (MTA)
Revenue 2026 (I-II kv)
137k €
▼ 32% vs 2025 I-II kv
As of 10.07.2026 (MTA)
Employees
3
2026 (MTA)
Taxes paid
185k €
State + labour taxes · 2026 (I-II kv)
Tax debt
€0
As of 10.08.2026 (MTA)

Officers

e-Business Register · 17 h ago
JH
Johan Henrik Robert Haneklou
Born 1998 · 28 y · board member since 19.12.2022
Board member

Founders

e-Business Register · 17 h ago
JH
Johan Henrik Robert Haneklou
Born 1998 · 28 y · founder since 18.12.2022
Founder · 3k €

Shareholders

e-Business Register · 17 h ago
JH
Johan Henrik Robert Haneklou
Born 1998 · 28 y · shareholder since 02.09.2023
Shareholder 100% · 3k €

Annual reports (3)

e-Business Register · annual reports · 5 päeva tagasi
Revenue 2025
274k €
↘ -55.8% vs 2024
State taxes 2025
343k €
↗ +47.4% vs 2024
Employees 2025
2
0.0% vs 2024
YearRevenueProfitEquity

Taxes, revenue and employees

Estonian Tax and Customs Board · 10.07.2026 as of
1,0m €500k €0

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
21.05.2026ReportEsitati 2025. aasta aruanne— Käive 274 190 €
2025
21.05.2025ReportEsitati 2024. aasta aruanne— Käive 619 885 €

Connected companies

Same-person ties · e-Business Register

Sealion OÜ is connected to 1 other company through 1 person who hold a role here and elsewhere. The strongest tie runs through Johan Henrik Robert Haneklou (1 company).

Total connections
1
via 1 person
Connecting people
1
Active here
Distinct roles
3
Board member · Founder
Strongest tie
Johan
1 company
Via personJohan Henrik Robert Haneklou
Assets
Employees
2025274 190 €−636 403 €507k €523k €221.05.2026
2024619 885 €−285 078 €1,1m €1,2m €221.05.2025
20231 594 161 €1 426 214 €1,4m €1,4m €002.05.2024
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
20222023202420252026
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2026I-II Q136 668 €88 816 €96 148 €3
2025330 681 €343 262 €371 189 €2
2024937 599 €232 831 €252 424 €2
20231 614 609 €––1
2022––––
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 202685k €52k €––
State taxes 202647k €41k €––
Taxes on workforce 202651k €45k €––
Employees 202633––
Revenue 2025118k €85k €85k €43k €
State taxes 202573k €60k €51k €159k €
Taxes on workforce 202579k €65k €55k €172k €
Employees 20252222
Revenue 2024221k €203k €383k €131k €
State taxes 202431k €62k €61k €78k €
Taxes on workforce 202434k €68k €66k €84k €
Employees 20241222
Revenue 20230 €836k €261k €517k €
State taxes 2023––––
Taxes on workforce 2023––––
Employees 2023–––1
Revenue 2022––––
State taxes 2022––––
Taxes on workforce 2022––––
Employees 2022––––
1
JH
Johan Henrik Robert Haneklou
board member, founder, shareholder 100%
1 other company›
CompanyRoleReg. code
Estonian Gamedev Guild MTÜ
Board memberFounder
80661187

Analysis · 2025

computed from annual reports
Revenue274k €median 50k €5.5× the sector median
Net margin-232.1%median 12.1%-244.2 pp vs sector median
Revenue per employee137k €median 70k €1.9× the sector median
Revenue change-55.8%median 3.4%-59.1 pp vs sector median
Equity ratio97.0%
Current ratio32.83
Labour cost of revenue302.5%
Profit per employee−318 201 €
Compared with2024revenue 620k €

Peer group: Programmeerimine, 5,817 trading companies that filed a report in the last three years.

Founded 2022. That year 16,826 osaühing were registered; 16,285 are still trading, or 96.8%.